Is the panasonic leica dg 50 200mm f 2 8 4 long enough for birds?

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From Panasonic Leica DG 50-200mm f/2.8-4: Panasonic Leica DG 50-200mm f/2.8-4: A zoom lens by Panasonic for Micro Four Thirds cameras, 50-200mm f/2.8-4. Specs - Maker: Panasonic - Focal length: 50-200mm (zoom) - Maximum aperture: f/2.8-4 (it gets darker as you zoom in) - Made for: Micro Four Thirds sensors - Mounts: Micro Four Thirds - Stabilised: yes - Autofocus: yes What it frames like - On Micro Four Thirds (Micro Four Thirds): like 100-400mm on full frame; f/2.8-4 gives about ...

From Panasonic Leica DG 200mm f/2.8: Panasonic Leica DG 200mm f/2.8: A prime lens by Panasonic for Micro Four Thirds cameras, 200mm f/2.8. A 400mm-equivalent f/2.8 telephoto prime.

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